From: Zoran Jovanovic <zoran.jovanovic@imgtec.com>
Date: Tue, 15 Sep 2015 15:21:27 +0000 (+0000)
Subject: [mips][microMIPS] Fix an issue with disassembling lwm32 instruction
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=3cedd0b1a02e9a3fc9fee294742079d3e5d23a7f;p=oota-llvm.git

[mips][microMIPS] Fix an issue with disassembling lwm32 instruction
Fixed microMIPS disassembler crash on test case generated by llvm-mc-fuzzer.
Differential Revision: http://reviews.llvm.org/D12881


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@247698 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/Mips/Disassembler/MipsDisassembler.cpp b/lib/Target/Mips/Disassembler/MipsDisassembler.cpp
index 6333d477716..4aa0afd7e03 100644
--- a/lib/Target/Mips/Disassembler/MipsDisassembler.cpp
+++ b/lib/Target/Mips/Disassembler/MipsDisassembler.cpp
@@ -1915,7 +1915,7 @@ static DecodeStatus DecodeRegListOperand(MCInst &Inst,
                                          uint64_t Address,
                                          const void *Decoder) {
   unsigned Regs[] = {Mips::S0, Mips::S1, Mips::S2, Mips::S3, Mips::S4, Mips::S5,
-                     Mips::S6, Mips::FP};
+                     Mips::S6, Mips::S7, Mips::FP};
   unsigned RegNum;
 
   unsigned RegLst = fieldFromInstruction(Insn, 21, 5);
diff --git a/test/MC/Disassembler/Mips/micromips.txt b/test/MC/Disassembler/Mips/micromips.txt
index 71768307879..238d786a2b6 100644
--- a/test/MC/Disassembler/Mips/micromips.txt
+++ b/test/MC/Disassembler/Mips/micromips.txt
@@ -241,6 +241,8 @@
 
 0x20 0x44 0x50 0x08 # CHECK: lwm32 $16, $17, 8($4)
 
+0x21 0x3b 0x59 0x84 # CHECK: lwm32 $16, $17, $18, $19, $20, $21, $22, $23, $fp, -1660($27)
+
 0x20 0x44 0xd0 0x08 # CHECK: swm32 $16, $17, 8($4)
 
 0x22 0x04 0x90 0x08 # CHECK: swp $16, 8($4)
diff --git a/test/MC/Disassembler/Mips/micromips_le.txt b/test/MC/Disassembler/Mips/micromips_le.txt
index 48046f8d1d4..c3b23741bd0 100644
--- a/test/MC/Disassembler/Mips/micromips_le.txt
+++ b/test/MC/Disassembler/Mips/micromips_le.txt
@@ -241,6 +241,8 @@
 
 0x44 0x20 0x08 0x50 # CHECK: lwm32 $16, $17, 8($4)
 
+0x3b 0x21 0x84 0x59 # CHECK: lwm32 $16, $17, $18, $19, $20, $21, $22, $23, $fp, -1660($27)
+
 0x44 0x20 0x08 0xd0 # CHECK: swm32 $16, $17, 8($4)
 
 0x04 0x22 0x08 0x90 # CHECK: swp $16, 8($4)